<el-menu :default-active="leftactive" style="border: 0;" @select="LeftSelect">
    <el-menu-item index="secretkey">
        <span>{lang key_configuration}</span>
    </el-menu-item>
    <el-menu-item index="tag">
        <span>{lang tag_prompt}</span>
    </el-menu-item>
    <el-menu-item index="desc">
        <span>{lang desc_prompt}</span>
    </el-menu-item>
    <el-menu-item index="filename">
        <span>{lang filename_prompt}</span>
    </el-menu-item>
</el-menu>
